The 433 MHz M163-i Wristband Tag is a battery-powered RF transmitter designed to be worn by children or adults for student, patient or personnel tracking applications. Every tag broadcasts its unique ID and a status message at a periodic rate (that is programmed at the factory). These tags provide an economical solution for educational settings, healthcare or enterprise use. RF Code’s patented communication protocols support high tag densities that allow large populations of tags to be deployed in confined spaces.

M163-i Wristband Tags are equipped with on-board infrared (IR) and motion sensors. This family of tags is designed to be deployed in concert with RF Code’s IR Room Locators. IR-enabled tags monitor their environment for incoming IR signals and periodically report both their own unique ID and IR location codes. Motion activation allows the tag operate at 2 beacon rates: slow when the tag is stationary, and faster when the motion sensor is activated. This provides a method for rapidly locating personnel with room-level accuracy. Since tag location is determined via the IR room code, there is no need for deploying multiple overlapping readers or performing complicated signal strength calculations or triangulation algorithms to determine tag location.

The M163-series tags are designed to be comfortably worn by the user when attached with standard single-use ¾” wristbands. Tag cases are impact resistant, splash resistant and temperature stable. This design includes an internal gasket and the tags are sealed via sonic-welding at the point of manufacture to resist moisture and fluids. Labels are applied internally to the clear PVC enclosure, allowing the tag to be subjected to rigorous wipe-down and cleaning procedures. Simply discard the wristband and re-use the tags over-and-over.

Powered by a coin cell battery, the M163-i tag operates with a very low duty cycle that translates to long battery life (typically up to 3 years). The tag will continue to operate in just about any environment where people can withstand the extremes (from -20 to +70 degrees Celsius), but battery life is maximized in temperature-controlled environments, such as schools and hospitals, with a nominal temperature of 25 degrees Celsius (77 degrees F). Based on the ratings and specifications from the battery manufacturers, RF Code develops usage models to calculate the life of the active RFID Tags. Like all models, there are assumptions and approximations involved. The values are to be taken as engineering estimates – not guaranteed performance. Exposure to extreme temperatures will shorten the battery life. RF Code warrants all tags to be free from defects in materials and workmanship for a period of 1 year.


  • Encoded Radio Transmissions at 433 MHz
  • IR-enabled for Room-Level Location Accuracy
  • Onboard Motion Sensor
  • Smooth, Form-fitting Design Accepts Standard 3/4″ Single-Use Wristbands
  • Waterproof Sonic-Welded Enclosure
  • Low Power Consumption for Long Battery Life
  • Superior Anti-Collision Technology for High Tag Densities